ZR-1 Net Registry Forums - View Single Post

mike100 · 07-21-2013

I adapted my headers with slip on SW parts to connect to headers and it is true- the car smells rich all of the time (just like first start in the morning before the cats light off and start functioning).

I plan to trim the collector back some and install 3" LS7 Cats if they will fit under the heat shielding. They are full density oem style substrate and I'm confident they will do a great job compared to various inexpensive high flow cats or nothing at all.

The car stands out too much in Cali with uncatalyzed fumes pouring out the back at idle and low load conditions. I expect the noise level will be brought down a notch as well with the cats installed which would be nice.

07-21-2013	#8
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: exhaust without cats I adapted my headers with slip on SW parts to connect to headers and it is true- the car smells rich all of the time (just like first start in the morning before the cats light off and start functioning). I plan to trim the collector back some and install 3" LS7 Cats if they will fit under the heat shielding. They are full density oem style substrate and I'm confident they will do a great job compared to various inexpensive high flow cats or nothing at all. The car stands out too much in Cali with uncatalyzed fumes pouring out the back at idle and low load conditions. I expect the noise level will be brought down a notch as well with the cats installed which would be nice.